Debt (Details) In Millions, except Per Share data, unless otherwise specified	3 Months Ended				0 Months Ended	3 Months Ended																																											1 Months Ended														0 Months Ended		0 Months Ended
	Mar. 31, 2015 USD ($)	Mar. 31, 2014 USD ($)	Dec. 31, 2014 USD ($)	Mar. 31, 2015 Prior Senior Credit Agreement	Apr. 22, 2015 New Senior Credit Agreement item	Mar. 31, 2015 Parent USD ($)	Mar. 31, 2014 Parent USD ($)	Dec. 31, 2014 Parent USD ($)	Mar. 31, 2015 Secured Credit Agreement Prior Senior Credit Agreement USD ($)	Mar. 31, 2015 Revolving Loans USD ($)	Mar. 31, 2014 Revolving Loans USD ($)	Mar. 31, 2015 Term Loan B USD ($)	Dec. 31, 2014 Term Loan B USD ($)	Mar. 31, 2014 Term Loan B USD ($)	Mar. 31, 2015 Term Loan C (76 million CAD at March 31, 2015) USD ($)	Mar. 31, 2015 Term Loan C (76 million CAD at March 31, 2015) CAD	Dec. 31, 2014 Term Loan C (76 million CAD at March 31, 2015) USD ($)	Mar. 31, 2014 Term Loan C (76 million CAD at March 31, 2015) USD ($)	Mar. 31, 2015 Term Loan D (EUR 85 million at March 31, 2015) USD ($)	Mar. 31, 2015 Term Loan D (EUR 85 million at March 31, 2015) EUR (€)	Dec. 31, 2014 Term Loan D (EUR 85 million at March 31, 2015) USD ($)	Mar. 31, 2014 Term Loan D (EUR 85 million at March 31, 2015) USD ($)	Mar. 31, 2015 Senior Notes 3.00%, Exchangeable, due 2015 USD ($)	Dec. 31, 2014 Senior Notes 3.00%, Exchangeable, due 2015 USD ($)	Mar. 31, 2014 Senior Notes 3.00%, Exchangeable, due 2015 USD ($)	Mar. 31, 2015 Senior Notes 7.375%, due 2016 USD ($)	Dec. 31, 2014 Senior Notes 7.375%, due 2016 USD ($)	Mar. 31, 2014 Senior Notes 7.375%, due 2016 USD ($)	Mar. 31, 2015 Senior Notes 6.75%, due 2020 (500 million EUR) USD ($)	Dec. 31, 2014 Senior Notes 6.75%, due 2020 (500 million EUR) USD ($)	Mar. 31, 2014 Senior Notes 6.75%, due 2020 (500 million EUR) USD ($)	Mar. 31, 2015 Senior Notes 4.875%, due 2021 (330 million EUR) USD ($)	Mar. 31, 2015 Senior Notes 4.875%, due 2021 (330 million EUR) EUR (€)	Dec. 31, 2014 Senior Notes 4.875%, due 2021 (330 million EUR) USD ($)	Mar. 31, 2014 Senior Notes 4.875%, due 2021 (330 million EUR) USD ($)	Mar. 31, 2015 Senior Notes 5.00%, due 2022 USD ($)	Dec. 31, 2014 Senior Notes 5.00%, due 2022 USD ($)	Mar. 31, 2015 Senior Notes 5.375%, due 2025 USD ($)	Dec. 31, 2014 Senior Notes 5.375%, due 2025 USD ($)	Mar. 31, 2015 Senior Debentures 7.80%, due 2018 USD ($)	Dec. 31, 2014 Senior Debentures 7.80%, due 2018 USD ($)	Mar. 31, 2014 Senior Debentures 7.80%, due 2018 USD ($)	Mar. 31, 2015 Capital leases USD ($)	Dec. 31, 2014 Capital leases USD ($)	Mar. 31, 2014 Capital leases USD ($)	Mar. 31, 2015 Other USD ($)	Dec. 31, 2014 Other USD ($)	Mar. 31, 2014 Other USD ($)	Dec. 31, 2014 New Senior Notes USD ($)	Mar. 31, 2015 Term Note Prior Senior Credit Agreement USD ($)	Mar. 31, 2015 Term Note Prior Senior Credit Agreement CAD	Mar. 31, 2015 Term Note Prior Senior Credit Agreement EUR (€)	Apr. 22, 2015 Term Note New Senior Credit Agreement USD ($)	Apr. 22, 2015 Term Note New Senior Credit Agreement EUR (€)	Apr. 22, 2015 Delayed Draw Term Loan New Senior Credit Agreement USD ($)	Mar. 31, 2015 Revolving Credit Facility Prior Senior Credit Agreement USD ($)	Apr. 22, 2015 Revolving Credit Facility New Senior Credit Agreement USD ($)	Apr. 22, 2015 Multicurrency Revolving Credit Facility New Senior Credit Agreement USD ($)	Mar. 31, 2015 Accounts Receivable Securitization Program USD ($)	Dec. 31, 2014 Accounts Receivable Securitization Program USD ($)	Mar. 31, 2014 Accounts Receivable Securitization Program USD ($)	Mar. 31, 2015 European Accounts Receivable Securitization Program EUR (€)	Apr. 22, 2015 Minimum New Senior Credit Agreement	Apr. 22, 2015 Minimum New Senior Credit Agreement	Apr. 22, 2015 Maximum New Senior Credit Agreement	Apr. 22, 2015 Maximum New Senior Credit Agreement
Debt Instrument
Total long-term debt	$ 3,444	$ 3,412	$ 3,333							$ 264	$ 150	$ 390	$ 405	$ 405	$ 59	76	$ 70	$ 74	$ 91	€ 85	$ 103	$ 116	$ 18	$ 18	$ 621	$ 597	$ 596	$ 594	$ 539	$ 608	$ 688	$ 356	€ 330	$ 401	$ 454	$ 494	$ 494	$ 296	$ 296	$ 250	$ 250	$ 250	$ 66	$ 63	$ 38	$ 24	$ 29	$ 22		$ 390	76	€ 85	$ 600	€ 279	$ 300	$ 900	$ 300	$ 600
Less amounts due within one year	460	41	361
Long-term debt	2,984	3,371	2,972			250	250	250
Interest rate, stated percentage																							3.00%			7.375%			6.75%			4.875%	4.875%			5.00%		5.375%		7.80%
Maximum Borrowing Capacity																																																														215
Unused Credit									558
Weighted Average Interest Rate (as a percent)				1.70%
Face Value																																					500		300
Interest expense	47	54				7	5
Net proceeds, after deducting debt issuance costs																																																	790
Principal Amount																										600			539			356				500		300		250									611
Indicated Market Price (in dollars per share)																										$ 105.88			$ 120.91			$ 112.33				$ 102.63		$ 103.13		$ 112.56
Fair Value																										635			652			400				513		309		281
Short-term loans and long-term debt due within one year	$ 637	$ 331	$ 488																																																								$ 171	$ 122	$ 253
Weighted average interest rate, short-term debt (as a percent)																																																											1.36%	1.41%	1.53%
Number financial maintenance covenants					1
Leverage ratio as defined in the Agreement					4.0
Increase in Leverage Ratio as defined in the Agreement																																																																	0.5
Number of fiscal quarters following the consummation of certain qualifying acquisitions as defined in the New Agreement					1 year
Interest rate margin, Eurocurrency Rate loans (as a percent)																																																																1.25%		1.75%
Interest rate margin, Base Rate loans (as a percent)																																																															0.25%		0.75%
Facility fee payable (as a percent)																																																															0.20%		0.30%