Debt (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 30, 2016
Current maturities of long-term debt
Debt Issuance Costs, Current, Net	$ 0.9	$ 0.6
Long-term Debt, Current Maturities	520.3	271.8
Long-term debt
Long-term Debt	5,417.3	5,965.8
Total Debt	5,937.6	6,237.6
Total Debt Issuance Costs	79.7	85.6
Long-term Debt
Long-term debt
Debt Issuance Costs	78.8	85.0
Receivable Securitization
Current maturities of long-term debt
Variable Rate Receivable Securitization	200.0	250.0
Debt Issuance Costs, Current, Net	0.1	0.3
Term Loan | Secured Debt
Current maturities of long-term debt
Debt Issuance Costs, Current, Net	0.0	0.3
Long-term Debt, Current Maturities	0.0	20.0
Long-term debt
Long-term Debt	0.0	1,928.5
Debt Issuance Costs	0.0	33.4
4.00% Term Loan | Secured Debt
Current maturities of long-term debt
Debt Issuance Costs, Current, Net	0.0	0.0
Long-term Debt, Current Maturities	1.1	1.0
Long-term debt
Long-term Debt	5.2	5.5
Debt Issuance Costs	0.0	0.0
New Term Loan | Secured Debt
Current maturities of long-term debt
Debt Issuance Costs, Current, Net	0.3	0.0
Long-term Debt, Current Maturities	18.7	0.0
Long-term debt
Long-term Debt	1,841.7	0.0
Debt Issuance Costs	29.4	0.0
Capital Lease Obligations and Vendor Financing
Current maturities of long-term debt
Debt Issuance Costs, Current, Net	0.0	0.0
Capital Lease Obligations, Current	0.5	0.8
3.50% Senior Notes | Unsecured Debt
Current maturities of long-term debt
Debt Issuance Costs, Current, Net	0.5	0.0
Long-term Debt, Current Maturities	300.0	0.0
Long-term debt
Long-term Debt	0.0	300.0
Debt Issuance Costs	0.0	0.9
4.88% Senior Notes | Unsecured Debt
Long-term debt
Long-term Debt	700.0	700.0
Debt Issuance Costs	7.0	8.2
9.50% Debenture | Debentures
Long-term debt
Long-term Debt	10.4	10.4
Debt Issuance Costs	0.0	0.0
5.75% Senior Notes | Unsecured Debt
Long-term debt
Long-term Debt	884.0	884.0
Debt Issuance Costs	10.5	11.6
8.00% Debenture | Debentures
Long-term debt
Long-term Debt	4.4	4.4
Debt Issuance Costs	0.0	0.0
4.75% Senior Notes | Unsecured Debt
Long-term debt
Long-term Debt	541.5	600.0
Debt Issuance Costs	5.1	6.1
5.625% Senior Notes | Unsecured Debt
Long-term debt
Long-term Debt	738.0	738.0
Debt Issuance Costs	10.5	11.4
5.50% Senior Notes | Unsecured Debt
Long-term debt
Long-term Debt	692.1	695.0
Debt Issuance Costs	9.6	10.2
2017 Revolving Credit Facility [Member] [Domain] | Secured Debt
Long-term debt
Long-term Debt	0.0
Debt Issuance Costs	$ 6.7
2015 Revolving Credit Facility | Secured Debt
Long-term debt
Long-term Debt		100.0
Debt Issuance Costs		$ 3.2