CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018	Jun. 30, 2018
Assets:
Allowance for Uncollectible Accounts	$ 110	$ 123
Noncurrent Assets:
Accumulated Depreciation of Property, Plant and Equipment	5,932	5,786
Accumulated Amortization of Other Intangible Assets	$ 785	$ 743
Shareholders’ Equity:
Common Shares, Par Value (in USD)		$ 0.001
Common Shares, Authorized (in shares)	1,356,000,000	1,356,000,000
Common Shares, Conditionally Authorized (in shares)		0	0
Common Shares, Issued (in shares)	1,004,000,000	1,002,000,000
Common Stock, Outstanding (in shares)	1,004,000,000	1,002,000,000
Treasury Shares, at cost (in shares)		0	0