Derivative Instruments (Fair Values of Derivative Assets and Liabilities) (Schedule and Footnotes) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Assets:
Current	$ 502.1	$ 252.1
Long-term	901.5	952.1
Total	1,403.6	1,204.2
Liabilities:
Current	1,237.6	751.2
Long-term	2,088.2	2,305.3
Total	3,325.8	3,056.5
Cross-currency and interest rate derivative contracts
Assets:
Current	498.5	248.4
Long-term	461.4	520.8
Total	959.9	769.2
Liabilities:
Current	1,150.7	727.2
Long-term	2,071.9	2,191.4
Total	3,222.6	2,918.6
Equity Contract [Member]
Assets:
Current	0	0
Long-term	439.4	430.4
Total	439.4	430.4
Liabilities:
Current	83.2	15.6
Long-term	0	101.3
Total	83.2	116.9
Foreign Exchange Forward [Member]
Assets:
Current	3.1	2.6
Long-term	0	0
Total	3.1	2.6
Liabilities:
Current	3.5	8.2
Long-term	16.1	12.0
Total	19.6	20.2
Other
Assets:
Current	0.5	1.1
Long-term	0.7	0.9
Total	1.2	2.0
Liabilities:
Current	0.2	0.2
Long-term	0.2	0.6
Total	$ 0.4	$ 0.8